666 DISEASES OF THE PROSTATE. 



frequent about the lips. Cadiot removed a large papilloma 

 weighing 12 lbs. from the glans penis of a dog by amputating the 

 penis itself with an elastic ligature. Francesco used the ecraseur 

 to remove an ulcerating angioma. Fellenberg saw a " knobby " 

 swelling on the penis of the dog ; Rubinski found in this situation 

 cancer in geldings ; Laurent a melanoma weighing about 50 lbs. 

 in a horse ; Johne and Eber primary tuberculosis in an ox. Schwenk 

 removed a papilloma from the glans of a stallion ; it had interfered 

 with copulation. 



The significance of these conditions depends chiefly on their 

 nature and extent, which require to be carefully considered in de- 

 livering a prognosis. Tumours on the prepuce rapidly produce 

 stenosis and phymosis or paraphymosis ; they may also press on 

 the urethra, or attack its walls and impede urination, whilst 

 malignant tumours lead to disseminated secondary growths. 



Treatment. Pedunculated warts are snipped off with scissors, 

 any slight bleeding being checked with the cautery or with lunar 

 caustic, which at the same time tends to prevent reproduction. 

 Large pedunculated tumours may be ligatured or removed with 

 the ecraseur. The elastic ligature is also recommended. Warts 

 and benign tumours with broad bases may, unless very large, be 

 destroyed by an irritant such as chromic, nitric, or sulphuric acid ; 

 the larger, and particularly those suspected to be malignant, are 

 better excised. Malignant growths on the penis may necessitate 

 amputation, to save the animal or to render it capable of work for 

 some time. 



V.— DISEASES OF THE PROSTATE. 



In the horse the prostate gland consists of two lobes about 3 inches 

 long and 2 broad. The gland is little developed in oxen and swine, 

 but is large in carnivora, in which it appears to surround the urethra. 

 In animals disease of this gland is much rarer than in man, but both 

 acute inflammation and abscesses occur, and chronic thickening, 

 with formation of new growths, has been seen in dogs. The first 

 clearly results from inflammation spreading from the urethra. 

 Haubner opened an abscess in the gland through the urinary passages ; 

 Reinemann (in a steer) operated from the anus. Bang saw acute 

 prostatitis in the horse ; Frauenholz tuberculosis of the gland in 

 oxen. 



Hypertrophy of the prostate, which often occurs in elderly people, 

 and consists of hypertrophy of glandular and increase of connective 

 tissue, is, amongst animals, almost entirely confined to dogs, and 



